#!/usr/bin/env ruby

#
# Copyright (c) 2006-2018 Wade Alcorn - wade@bindshell.net
# Browser Exploitation Framework (BeEF) - http://beefproject.com
# See the file 'doc/COPYING' for copying permission
#

#
# @note stop deprecation warning from being displayed
#
$VERBOSE = nil

#
# @note Version check to ensure BeEF is running Ruby 2.3+
#
if RUBY_VERSION < '2.3'
  puts
  puts "Ruby version #{RUBY_VERSION} is no longer supported. Please upgrade to Ruby version 2.3 or later."
  puts
  exit 1
end

#
# @note Platform check to ensure BeEF is not running on Windows
#
if RUBY_PLATFORM.downcase.include?('mswin') || RUBY_PLATFORM.downcase.include?('mingw')
  puts
  puts "Ruby platform #{RUBY_PLATFORM} is no longer supported."
  puts
  exit 1
end

#
# @note set load path, application root directory and user preferences directory
#
$root_dir = File.join(File.expand_path(File.dirname(File.realpath(__FILE__))), '.')
$:.unshift($root_dir)
$home_dir = File.expand_path("#{Dir.home}/.beef/", __FILE__).freeze

#
# @note Require core loader's
#
require 'core/loader'

#
# @note Check the system language settings for UTF-8 compatibility
#
env_lang = ENV['LANG']
if env_lang !~ /(utf8|utf-8)/i
  print_warning "Warning: System language $LANG does not appear to be UTF-8 compatible."
  if env_lang =~ /\A([a-z]+_[a-z]+)\./i
    country = $1
    print_more "Try: export LANG=#{country}.utf8"
  end
end

#
# @note Initialize the Configuration object. Loads a different config.yaml if -c flag was passed.
#
if BeEF::Core::Console::CommandLine.parse[:ext_config].empty?
  config = BeEF::Core::Configuration.new("#{$root_dir}/config.yaml")
else
  config = BeEF::Core::Configuration.new("#{BeEF::Core::Console::CommandLine.parse[:ext_config]}")
end

#
# @note After the BeEF core is loaded, bootstrap the rest of the framework internals
#
require 'core/bootstrap'

#
# @note Loads enabled extensions
#
BeEF::Extensions.load

#
# @note Prints the BeEF ascii art if the -a flag was passed
#
if BeEF::Core::Console::CommandLine.parse[:ascii_art] == true
  BeEF::Core::Console::Banners.print_ascii_art
end

#
# @note Check if port and WebSocket port need to be updated from command line parameters
#
unless BeEF::Core::Console::CommandLine.parse[:port].empty?
  config.set('beef.http.port', BeEF::Core::Console::CommandLine.parse[:port])
end

unless BeEF::Core::Console::CommandLine.parse[:ws_port].empty?
  config.set('beef.http.websocket.port', BeEF::Core::Console::CommandLine.parse[:ws_port])
end

#
# @note Prints BeEF welcome message
#
BeEF::Core::Console::Banners.print_welcome_msg

#
# @note Loads enabled modules
#
BeEF::Modules.load

#
# @note Disable reverse DNS
#
Socket.do_not_reverse_lookup = true

#
# @note Database setup - use DataMapper::Logger.new($stdout, :debug) for development debugging
#
case config.get("beef.database.driver")
  when "sqlite"
    DataMapper.setup(:default, "sqlite3://#{$root_dir}/#{config.get("beef.database.db_file")}")
  when "mysql", "postgres"
    DataMapper.setup(:default,
                     :adapter => config.get("beef.database.driver"),
                     :host => config.get("beef.database.db_host"),
                     :port => config.get("beef.database.db_port"),
                     :username => config.get("beef.database.db_user"),
                     :password => config.get("beef.database.db_passwd"),
                     :database => config.get("beef.database.db_name"),
                     :encoding => config.get("beef.database.db_encoding")
    )
  else
    print_error 'No default database selected. Please add one in config.yaml'
    exit 1
end

#
# @note Resets the database if the -x flag was passed
#
if BeEF::Core::Console::CommandLine.parse[:resetdb]
  print_info 'Resetting the database for BeEF.'
  DataMapper.auto_migrate!
else
  DataMapper.auto_upgrade!
end

#
# @note Extensions may take a moment to load, thus we print out a please wait message
#
print_info 'BeEF is loading. Wait a few seconds...'

#
# @note Execute migration procedure, checks for new modules
#
BeEF::Core::Migration.instance.update_db!

#
# @note Create HTTP Server and prepare it to run
#
http_hook_server = BeEF::Core::Server.instance
http_hook_server.prepare

#
# @note Prints information back to the user before running the server
#
BeEF::Core::Console::Banners.print_loaded_extensions
BeEF::Core::Console::Banners.print_loaded_modules
BeEF::Core::Console::Banners.print_network_interfaces_count
BeEF::Core::Console::Banners.print_network_interfaces_routes

#
# @note Create ~/.beef/
#
begin
  FileUtils.mkdir_p($home_dir) unless File.directory?($home_dir)
rescue => e
  print_error "Could not create '#{$home_dir}': #{e.message}"
end

#
# @note Check whether we load the Console Shell or not
#
if config.get("beef.extension.console.shell.enable") == true
  print_error "The console extension is currently unsupported."
  print_more "See issue #1090 - https://github.com/beefproject/beef/issues/1090"
end

#
# @note Warn and replace on default credentials
#
if config.get("beef.credentials.user").eql?('beef') &&
   [/beef[0-9]*/, /passw[o0]rd[0-9]*/].select{|pattern| pattern.match(config.get("beef.credentials.passwd"))}.any?
  print_warning "Warning: Default username and weak password in use!"
  better_phrase = BeEF::Core::Crypto::secure_token(16)
  config.set("beef.credentials.passwd", better_phrase)
  print_more "New password for this instance: #{better_phrase}"
end

#
# @note Prints the API key needed to use the RESTful API
#
print_info "RESTful API key: #{BeEF::Core::Crypto::api_token}"

#
# @note Call the API method 'pre_http_start'
#
BeEF::API::Registrar.instance.fire(BeEF::API::Server, 'pre_http_start', http_hook_server)

#
# @note Load any ARE (Autorun Rule Engine) rules scanning the <beef_root>/arerules/enabled directory
#
BeEF::Core::AutorunEngine::RuleLoader.instance.load_directory

#
# @note Start the WebSocket server
#
if config.get("beef.http.websocket.enable")
  BeEF::Core::Websocket::Websocket.instance
  BeEF::Core::Console::Banners.print_websocket_servers
end

#
# @note Start HTTP server
#
print_info 'BeEF server started (press control+c to stop)'
http_hook_server.start
